The Next Big Challenge for Lunar Astronauts? Moon Dust

As NASA and private space companies prepare to send equipment—and eventually astronauts—back to the moon, they are facing a nearly invisible threat to any future lunar outpost: tiny particles of dust. Ground-up lunar rock, known as regolith, clogs drills and other...

Extreme Heat Could Also Mean Power and Water Shortages

Officials at the federal Bureau of Reclamation reported this month that the West’s two big reservoirs—Lake Mead in Nevada and Arizona and Lake Powell in Utah and Colorado—are deteriorating toward “dead pool” status, where stored water is at such a low level it can’t...